Shellcode encoder

encoder.py

#!/usr/bin/env python
import sys

def chunks(l, n):
    for i in range(0, len(l), n):
        yield l[i:i + n]

shellcode =  "your"
shellcode += "shellcode"
shellcode += "here"

key = []
key.append(0xDE)
key.append(0xAD)
key.append(0xBE)
key.append(0xEF)

out = []

for i in range(0, len(shellcode)):
    b1 = ord(shellcode[i]) ^ key[i % 4]
    out.append(b1)

for line in chunks(out, 16):
    b = ''.join(["\\x{0:02x}".format(c) for c in line])
    sys.stdout.write('\n"{0}"'.format(b))

sys.stdout.write(';\n')
sys.stdout.flush()